[1] Univ Calif San Francisco, Dept Neurol, San Francisco, CA USA
[2] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[3] Johns Hopkins Univ, Baltimore, MD USA
[4] Univ Toronto, Dept Neurol, Toronto, ON, Canada
[5] McGill Univ, Montreal Neurol Inst & Hosp, Neuroimmunol Unit, Montreal, PQ, Canada
[6] McGill Univ, Montreal Neurol Inst & Hosp, Expt Therapeut Program, Montreal, PQ, Canada
[7] Vrije Univ Amsterdam, Med Ctr, Dept Radiol, Amsterdam, Netherlands
[8] F Hoffmann La Roche Ltd, Basel, Switzerland
[9] PDCN F Hoffmann La Roche, Basel, Switzerland
[10] Univ Basel Hosp, CH-4031 Basel, Switzerland
[11] Univ Basel Hosp, Dept Biomed, CH-4031 Basel, Switzerland